摘要
在谐振式光纤陀螺(RFOG)系统中,利用锁频技术可以将激光器的中心频率锁定在谐振频率点上,从而完成对陀螺角速度的检测。目前常用于频率跟踪与锁定的PI控制方法更适用于线性系统,对于非线性的RFOG系统,为了提升其角速度跟踪能力和锁定精度,引入了自抗扰控制方法,并搭建了Simulink仿真系统进行模型对比。仿真结果表明,与PI控制方法相比,自抗扰控制方法能够得到相同的锁频时间及动态范围,当系统有角速度输入时,自抗扰控制方法的跟踪能力较好,且角速度检测精度相较于PI控制有一个数量级的提升,为今后的工程应用提供了思路。
In resonator fiber optical gyro(RFOG)system,the center frequency of the laser can be locked at the resonant frequency point by using the frequency locking technique,so that the gyro angular velocity can be measured.At present,the PI control method commonly used for frequency tracking and locking is more suitable for linear systems.For the nonlinear RFOG system,in order to improve its an⁃gular velocity tracking capability and locking accuracy,the active disturbance rejection control(ADRC)method is introduced,and a Sim⁃ulink system is built for model comparison.The simulation results show that compared with PI control method,ADRC method can obtain the same frequency locking time and dynamic range.When the system has angular velocity input,the tracking ability of ADRC method is better,the angular velocity detection accuracy is improved by an order of magnitude compared with PI control,which provides ideas for future engineering applications.
作者
李启轩
陈熙源
钟雨露
沙梦梦
张飞麟
卢飞平
LI Qixuan;CHEN Xiyuan;ZHONG Yulu;SHA Mengmeng;ZHANG Feilin;LU Feiping(School of Instrument Science and Engineering,Southeast University,Nanjing Jiangsu 210096,China;MOE Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology,Nanjing Jiangsu 210096,China;Shanghai Electric Control Research Institute,Shanghai 200092,China)
出处
《传感技术学报》
北大核心
2025年第12期2166-2173,共8页
Chinese Journal of Sensors and Actuators
基金
国防预研基金项目(8922006150)
国家自然科学基金项目(61873064)。
